Difference between revisions of "Tarsier Tutorial: Watershed simulation using the Marmoset Model"

Revision as of 15:13, 1 March 2010

Prerequisites

Importing Hydro DEM into Tarsier

1. Find your hydroDEM and change the extension from .txt to .asc.
2. Open Tarsino
3. Open your hydroDEM raster by going to File->Open, navigate to your raster and click open.
4. Save the raster
   1. File->Save As.
   2. The Tarsier Save Dialog should come up. The top yellow box is the raster viewer file *.trv. The second box is your raster file *.tra. Go to the second box and click the browse button. Browse to an appropriate folder and give the file a name. Click the 'Save All' Button.

Creating a Network data using the WatershedForm

1. Create a new Watershed form
   1. File->New->Analysis->Watershed form
2. Go to the input tab and load your hydroDEM
3. Create a pointer image(Ptr) raster
   1. Go to the streams tab and click the Calc Ptr button
   2. Go to the Ptr UseeControl and click the view button.
   3. Now save your Ptr raster
      1. File->Save As.
      2. The Tarsier Save Dialog should come up. The top yellow box is the raster viewer file *.trv. The second box is your raster file *.tra. Go to the second box and click the browse button. Browse to an appropriate folder and give the file a name. Click the 'Save All' Button.
   4. Close the Ptr raster
4. Calculate the streams
   1. Set the threshold upslope area above which cells are considered streams by changing the value inside the Tresh box.
   2. Click Calc stream button - this will calculate NetPtr, UpslopeArea, LnA, and Stream.

Creating 3D view

Running the model